Kinetics Study on the Thermal Decomposition of Europium p-methyl benzoate Complex with 1, 10-penanth

• 作 者: 曾冬铭 周智华 舒万艮 刘又年
• 机 构: 中南工业大学化学化工学院，长沙 410083
• 出 处: 稀有金属
• 发表日期: 2001年2期
• 关键词: decomposition reaction Gibbs free energy activation energy

The thermal decomposition reaction of Eu2(p-MBA)6(PHEN)2 (p-MBA=CH3C6H4COO, methylbenzoate;PHEN=C12H8N2, 1,10-phenanthroline) was studied in a static atmosphere usingTG-DTG method. The thermal decom position process of the complex was determined and its kinetics was investigated. Kinetic parameters were obtained from the analysis of TG-DTG curves by means of the Achar method and the Madhusudanan-Krishnan-Ninan (MKN) method.The most probable mechanism functions of the thermal decomposition reaction for the first stage are: f(α)= (1-α)2,g(α) = (1 -α) 1- 1. The activation energy for the first stage is 255.18 k J/mol, the entropy of activation AS is 227.32 J/mol and the Gibbs free energy of activation AG is 128.04 k J/mol.